Yes, we all wished we could have been there. But for those who didn’t get a chance to attend I/O and wanted to see the many sessions that took place, Google has uploaded full videos of several sessions to YouTube for your enjoyment.

These videos are obviously developer-centric, so they probably won’t matter much to the average user. However, it will matter to developers who missed the event or certain sessions. Here are some of the Android-related session videos. For more videos, a complete list of sessions, and download links to presentation PDF’s and videos, visit the Sessions at Google I/O page.

Coding for Life — Battery Life, That Is

“The three most important considerations for mobile applications are, in order: battery life, battery life, and battery life. After all, if the battery is dead, no one can use your application.”

This session focused on coding for improved battery life. The speech is delivered by Jeffrey Sharkey, a Google engineer and Android Developer Challenge alum.

Writing Real-Time Games for Android

“Writing games is awesome, and Android is awesome, so writing games on Android must be awesome. This theory required testing. So I made a game. Many lessons learned.”

This session focused on several topics related to developing games for Android. It even includes a preview of Replica Island, a Sonic the Hedgehog-style game Chris Pruett is developing (12:32 mark). The speech is delivered by Pruett, an Android development advocate based in Japan.

Looking Beyond the Screen: Text-to-speech and Eyes-Free Interaction on Android

“This talk will present a brief high-level overview of the TTS library and the stroke dialer input method, then dive into the details of how you can use these technologies in your own Android applications.”

This talk focuses on the benefits of developing “eyes-free” apps. The talk is delivered by TV Raman, the blind Google employee who co-developed the Eyes-Free dialing app.

Turbo-charge your UI: How to Make your Android UI Fast and Efficient

“How many of you have had performance issues in your Android UI’s? Raise your hands, don’t be shy….The rest of you, you don’t write applications? Or your code is perfect?”

This video focuses on ways to develop a good-looking UI that is more efficient and faster. The talk is delivered by Romain Guy, a Google software engineer whose work deals mainly with phone UI’s.